samples: bluetooth: hci_uart: fix dtsi path in overlay

fix dtsi overlay include path for nrf9160dk_nrf52840

Signed-off-by: Karthikeyan Krishnasamy <[email protected]>

Author: karthi012

samples/bluetooth/hci_uart/boards/nrf9160dk_nrf52840.overlay

@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <nrf9160dk_nrf52840_reset_on_if5.dtsi>
+#include <nrf52840/nrf9160dk_nrf52840_reset_on_if5.dtsi>
 
-#include <nrf9160dk_uart1_on_if0_3.dtsi>
+#include <nrf52840/nrf9160dk_uart1_on_if0_3.dtsi>
 
 &uart1 {
 	current-speed = <1000000>;

samples/bluetooth/hci_uart/boards/nrf9160dk_nrf52840_0_14_0.overlay

@@ -5,4 +5,4 @@
  */
 
 /* Use the reset line that is available starting from v0.14.0 of the DK. */
-#include <nrf9160dk_nrf52840_reset_on_if9.dtsi>
+#include <nrf52840/nrf9160dk_nrf52840_reset_on_if9.dtsi>